Basically, if you are about to try to refit your gun with super low pressure internal all in the name of getting a quieter sound signature, you'd probably be better served by throwing a venturi bolt in there. Obviously that's not going to happen on a T2 without custom work.
Yes, they restrict air flow. That's the point. You slow the gas burst down, lowering the pressure that the ball is hit with, which also reduces the sound of firing the gun. There's a reason Phantoms are quieter than other Nelsons, and it's the TPC - aka a Venturi bolt.
Originally Posted by agentSmith
oldschool play is about sportsmanship and respect, oldschool gear is available on Ebay.